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Comparison of weighted and unweighted densities (selected compounds). Empirical success and failure densities were estimated with weighted kernel density estimation, as described in Methods. Above, the weighted densities for the drug compounds 3TC or FTC (A), ddI (B), DRV/r (C), and IDV/r (D) are plotted along with their unweighted versions. Resistance-factor density is also depicted as a rug plot at the top of each individual plot.
